The HP TouchPad's recent history has told us one thing – a cheap tablet sells. Which is certainly good news for Amazon's forthcoming budget affair, if indeed, the rumours prove true. But leaving Amazon aside, it now seems like HP has a decent pool of customers following the TouchPad markdown to £89, enough for the company to push out a new update.The company has announced that it will soon offer an over-the-air update for the webOS tablet. No one is quite sure what that will entail, but the company is saying it will improve functionality of what is now, the second most popular tablet in the world. Officially, the company is still working with webOS until the last quarter of 2011, so there could yet be more to come.Interestingly, there might be more stock of the HP TouchPad too, although it's not clear if this is US-only or not. The company has made a statement claiming that it has 'decided to produce one last run of TouchPads to meet unfulfilled demand'. Numbers are vague, as is the (virtual) shelf date. In the US, you can try to pre-order, although the UK store currently has a very stern 'sold out' sign. Just sit tight and wait if you want one of the budget tablets.Is that the end of the story for the TouchPad? Perhaps not. In an interview with Reuters, Personal Systems Group head at HP Todd Bradley said: 'Tablet computing is a segment of the market that's relevant, absolutely,' but didn't eloborate further. Maybe HP is pondering a TouchPad 2 and based on recent experience, going straight in at a lower price point. By accident, the company could have found the winning strategy against Apple.