Apple's deal with LG is about computer displays. Apple is NOT going to introduce a TV set. Apart from that, the predictions of a DVR set top box are probably pretty close.
They already make a really cool, reasonably priced, (and not particularly well known) product named "AppleTV". It allows playback of your iTunes library, podcasts, and streaming SD and HD on demand movies from a broadband connection. Outputs are HDMI, composite, and component video, HDMI, optical, and analog audio. It's overdue for a significant hardware upgrade. Add a tuner, a DVR like scheduler, and a larger HD and you've got everything described except for a TV screen. Include a DVD player or DVD burner and it can be a DVD and DVR device.
For all I know, it could be announced at their event on Sept 9th or it may never happen, but it's certainly plausible. A TV monitor from Apple is not plausible.