Compiling all of the Blood TC's in development. Maybe there should be a Sticky? Just throwing it out there.
Probably the most anticipated one is BloodXL.
http://xlengine.com/forums/
http://youtu.be/KPYvmC2WqIo
Having played DarkXL this has a ton of promise.
2nd project that's been in development since 2008 is an Eduke TC.
http://m210.ucoz.ru/load/bloodtc_for_eduke32/2-1-0-34
The author's thread on the Eduke forums http://forums.duke4.net/topic/848-bloodtc-for-eduke32/
I've played it and it's damn good. Needs some tweeks but it's very close to being Blood.
Last to my knowledge (as far as TC's that are under current development) is ZBloodPlus.
http://forum.zdoom.org/viewtopic.php?f= ... 3a1d03fd7a
Has a ways to go and needs some fixing in a lot of areas but it has promise.