Not that I know of... I have my THR-22 sitting right next to a Premiere in the living room since I get free lifeline basic Comcast with rent (I decided to keep it active since I get neighboring locals, CBC and all the local subchannels that way and extra tuners for network shows... Worth the $12.95 Tivo fee
The THR essentially is an HR10-250 that can get all the HD in MPEG4 and On Demand... Other than that, I don't remember anything new with it from back when I had my 250.
All the 'extra' Tivo features are not present on the D* box. Technically it is a 'Series 3' but is completely locked down just like the old D* series 2s were... Since I do have the Premiere, that's what I use for Netflix, Pandora etc...
It's really a shame... I keep hoping D* will release a Series 4 or Roamio version, but that's just a dream (hey I can dream
... I had to wait years for this one, and every indication is that it is an orphan box... It took something like 8 months for a software update to fix On Demand after it got bricked one day for everyone.
The only indication that D* even cares is that they run plenty of promos for the box--but their website then hints in every way that it is crippled, has an extra fee, and is inferior to the Genie in every way. I think the promos are simply a legal requirement that they promo Tivo a certain amount as part of their contract to service the old Series 2s and could really care less about this box.
That said, I have 3 of them (the $5 fee is good for the entire account)... If I didn't have the free cable and the Premiere, I'd be a lot more angry--but the THR is a reliable DVR, is familiar, and does what I want for the additional TVs.