The first set of new resin / plastic miniatures from Mantic Games are called Revenants, they're Undead Army Cavalry and they are extremely good value - less plastic used for undead models ;-)
These are fairly neat 28mm scale models. There is a superb and very detailed review of them on Total Wargamer below (apparently, from the parts provided it's possible to build 4 different mounts and 7 different horsemen (of the apocalypse I presume !) plus a 3 model command:-http://www.totalwargamer.co.uk/blog/?p=1027
I've trawled around a bit it and it sounds like the models are going down very well. They are certainly good value for money at £25 for 10 (that's about $39 USD). If you visit Total Wargamer above they are actually running a 25% discount on the minis at the moment so they work out as £18.74 (see above link above).
The Mantic photos aren't great, they need to get higher definition shots with better lighting but they should give you a good idea of what to expect.
