Both these games here picked up and are in still in production.
Shadowrun, in it's 3rd edition, is picking up where FASA left off.
Battletech is going in two directions.
The folks at Whizkids are producing a version using their dial base system.
Then there is the so-called Classic Battletech.
I don't know how classic it really is, since they include that 3050 bullstuff.