The popular HL2 mod Source Forts has released their latest version, changelog below:
"v1.3.2 20:35 08.02.05
* Pulse Rifle down to 7 frags
* Fixed auto-freeze not working sometimes
* Fixed sounds only playing if you're close to the flag
* Added no-freeze areas and updated FGD for it
* Made objects go transparent while holding them
* Added entity option to make flags freeze on build mode or move during build mode
* Made message appear when you pick up the flag
* Made SLAMs (just tripmines) usable during build mode
* Infinite sprint during build mode
* New Map: sf_abandon (Thanks Stinger)
* sf_testmap: Added vphysics clips for flags on the roofs, so they can't hit off
* sf_testmap: Made build wall higher and moved spawn points"
Head over to their site for the download links