There is a new one coming out soon, but the hardware specs are exactly the same and it runs on exactly the same software, so there should be no difference between them, except that the current ones are made by Pace and the new ones will be made locally (read: cheaper for multichoice, same price for you). If you can get an sd pvr, then rather go with that. I find myself using the dstv on demand all the time on my sdpvr. That feature (along with all the other interactive stuff except some sport stuff and weather) is not available on the hdpvr... yet...
It was all supposed to be there a couple of updates ago, but all they have managed to do in about 5 updates is get the basic functions working properly. and then only barely...
The one hd channel is cool, but I still find that the program guide is out on it...
My advice, go sd if you can get one...
Best bet is to hire one from Teljoy ..... that way, if it bombs, you just get a new one / free fix instead of a R4000 ornament.
I'n not sure how much it costs to hire from Teljoy, but for an extra R35 a month you can do the same with mnet.... the crap thing is = you lose all your recorded stuff every time..