There aren't many choices in terms of pre/pros with HDMI and processing of the new high rez formats....the Integra 9.8 and....?? There are a few receivers that might fit what you want to do, from the usual suspects...Denon, Yamaha, Marantz, Onkyo, etc.
I'm sort of in the same boat you are. I have a five year old Outlaw 950 pre/pro, and I'm wanting to go to HDMI and get DD True HD and DTS-MA in house. I'm probably going to get one of the less expensive receivers (with preouts) and use it for a year, then upgrade to a higher end pre/pro next year...I just hope there are some nice offerings by then.