Balancing

• Changed expensive variant of electronic circuit to require 8 copper cables instead of 10.

Changes

• User verification must be enabled for public multiplayer games. LAN games, direct-connect, and Steam still don't require user verification.
• Network message segment size can be configured in server-settings.json, for server providers with large enough upload bandwidth.
• Added "Build with obstacle avoidance" into controls settings with CONTROL + Left mouse click as default. It re-introduces the possibility to build rails in ghost mode that avoid trees rocks and cliffs.
• Decreased base damage of Personal laser defense from 40 to 30.
• Decreased base shooting speed of Laser turret and Personal laser defense equipment from 3 shots per second to 1.5 shots per second.
• Reverted combat latency behavior to do latency hiding while in combat. more

Bugfixes

• Fixed that extra fast (modded) splitters didn't work properly. more
• Fixed an inconsistency between area selection and logistic network highlight. more
• Fixed that probabilistic recipe result that is also a catalyst didn't put itself into consumed statistics when the probability check failed and the item wasn't produced. more
• Fixed visual errors when dragging train schedule conditions. more
• Fixed that locale settings didn't save when changed. more
• Solved that pressing ALT while walking right (D being pressed) stopped the character as it interfered with ALT + D. more
• Fixed connection preview of underground belt in blueprint in a specific case. more
• Changed accumulator/wall/underground belt map color to be more contrast against certain tiles. more
• Fixed laser turrets were shooting beams that would last until target was destroyed even if it got out of range and turret stopped shooting. more
• Fixed Laser turret shooting speed research didn't increase damage of laser turret. more
• Fixed Laser turret shooting speed research didn't increase damage of Personal laser defense equipment. more
• Fixed that biters sometimes couldn't get past other biters. more
• Fixed that migration scripts couldn't use "require". more
• Fixed a crash related to fast-replacing modded generator entities without fluidboxes.
• Fixed loaders would not wake up sometimes after picking up items from them manually. more
• Fixed that space science pack technology did not have accumulators and solar panels in prerequisites. more
• Fixed that switching to another window while dragging a widget (slider) with a tooltip didn't clear the tooltip. more
• Fixed that rails would report bounding box sizes of zero when read through the LuaEntityPrototype API. more
• Fixed that unit groups could get stuck at the end of their assigned path. more
• Fixed a desync related to changing forces in the map editor. more
• Fixed a crash related to fluid connection changes in mods. more
• Fixed that creating character corpses using player_index was off by 1. more
• Added extra check to prevent infinite cycle in fast belt building. more
• Fixed a crash when building train stations when the backers.json file is empty. more
• Fixed that entities could have their light rendered twice. more
• Fixed that biters had difficulty pathfinding around crescent-shaped lakes. more
• Fixed that the "not enough rails" error didn't work correctly in the map editor. more
• Fixed train would not stop exactly in the station preventing pumps to connect to fluid wagons when a mod was changing speed of breaking train. more
• Fixed that trains would try to path to train stops on different surfaces. more
• Fixed pump would not disconnect from fluid wagon when rail besides pump was mined or destroyed. more
• Fixed a crash related to the rail planner. more
• Fixed that the mod info label in the technology tooltip didn't line wrap. more
• Fixed a crash near the start of the NPE. more

Modding

• Changed how beams are drawn to improve seamless tiling of beam segments. Head and tail segments are now stretched to fill space from source/target position to next segment.
• Changed how beams apply damage. By default, they no longer trigger their action every damage_interval, instead the action is triggered when its owner triggers shooting. The old behavior can be turned on by setting BeamPrototype::action_triggered_automatically to true.
• It is possible to specify fluid product or ingredient with a fluidbox_index so they use exactly one slot corresponding to the specified fluidbox of the machine.
• Changed the "market" entity from entity-with-health to entity-with-owner so it now has a force and unit_number.
• Changed fluid energy source prototypes to error when no consumption limits are set instead of logging a warning.
• Added util.parse_energy().

Scripting

• Added LuaGui::screen.
• Added on_gui_location_changed, on_gui_selected_tab_changed, and on_gui_switch_state_changed events.
• Added LuaGuiElement type "empty-widget", "tabbed-pane", "tab", and "switch".
• Added LuaGuiElement::add_tab(), remove_tab(), and force_auto_center().
• Added LuaGuiElement::location, auto_center, drag_target, selected_tab_index, tabs read/write.
• Added LuaGuiElement::switch_state, allow_none_state, left_label_caption, left_label_tooltip, right_label_caption, right_label_tooltip read/write.
• Added LuaStyle::badge_font, badge_horizontal_spacing, default_badge_font_color, selected_badge_font_color, disabled_badge_font_color, selected_font_color, selected_hovered_font_color, selected_clicked_font_color, strikethrough_color read/write.
• Added clear_and_focus_on_right_click to LuaGuiElement text-box.
• Added LuaGuiElement::get_slider_value_step(), get_slider_discrete_slider(), get_slider_discrete_values(), set_slider_value_step(), set_slider_discrete_slider(), set_slider_discrete_values().
• Added LuaGuiElement::get_mod().
• Added LuaEntity::loader_container read.
• Added LuaEntity::belt_neighbours read.

Use the automatic updater if you can (check experimental updates in other settings) or download full installation at http://www.factorio.com/download/experimental.