Via the Steam Community:

MAPS

Cache

• Fixed various holes in map.
• Simplified grenade clipping in various areas.
• Fixed sounds and surfacetypes for various materials.
• Orange wire spool at Sandbags has been exchanged for white wire.

MUSIC KITS

• NIGHTMODE II Music Kits are now available for purchase in standard and StatTrak versions through the STORE tab.

WORKSHOP

• Fixed progressive refinement rendering Source Film Maker.

MISC

• User Viewmodel FOV now correctly networks to remote clients.
• Adjusted player model occlusion bounds.
• Fixed ragdolls missing death velocity when shot in specific body locations.
• Minor adjustments to ground smoothing transitions when leaving the ground and when landing.
• Fixed a case where post-processing transitions weren't smooth (e.g. at the end of freeze time).
• Fixed a case where map guides for Ancient wouldn't load in the nighttime version.

Rumor has it:

• Please put your cans in the air for /u/dmurio, who originally reported the Progressive Refinement checkbox in Source 2 Filmmaker being broken on /r/Dota2

  • This fix first shipped in the Dota 2 build of S2FM as part of yesterday's release of DotA 7.41c

• Size is close to 575 MB (with Workshop Tools installed)