Well, that's a nice myth about the lack of regular software updates, but it's just that.
I don't tend to post here with all the details of software, since there's a much more active forum elsewhere.
Since the July update, we have tested a number of beta firmwares; I don't tend to give details of those, because people get over-excited and assume everything that's in a beta will appear in the final one, which often isn't the case. And we never give dates until we're sure we can meet them, so that I don't have to waste my time listening to people saying "Oh, the update is late."
Updates are ready, when they're ready. There's been one release on the Topfield web site since July's update, plus another firmware that's been on some shipped units, and is available for download from Toppy.org.uk; meanwhile we've have a few beta softwares.
Last year the beta test team looked at around 10 different firmwares, providing feedback on them, and when we're completely happy, then there'll be a public release and an OTA; at the moment, work is being done on a number of things, inlcluding Playback compatibility.
In terms of adding functionality, there's not a huge amount that the Humax does out of the box that would need to be added to the Topfield - the title search, perhaps, and auto-padding. It wasn't lacking chase play, and similar features, needing them to be added in updates in the first place.
When there's news of an update, it will be posted in the usual place; in the meantime, just because you don't read about things here, don't assume that it means nothing is happening.
Nigel.