In addition to the new Kindle Fire HDX, Amazon also has a new, low-cost model of the original Kindle Fire HD. The new model has a redesign to look like the new HDX—they're very angular now, but internally it's the same old gear.
To refresh your memory, the Fire HD has a 1280x800 screen, a 1.2GHz TI OMAP processor (not great, but good enough), 1GB or RAM, and was, for all intents and purposes, a perfectly decent tablet to watch movies on or read a comic or magazine. It didn't quite measure up to the other more wallet-friendly tablets, but with a US pricing of $140, and with a new design to boot, it's not half bad.
As for the UK cost, Amazon are keeping quiet for the moment, and the same goes for availability. If previous Kindle tablet launches are anything to go by though, we'll see these trickling into our stores in a few months time. Christmas would be nice.