Years ago, HP purchased Palm with the intention of producing tablets based on WebOS. After a very short time on the market, the company pulled the plug and liquidated their stock for $99. These tablets, of course, sold instantly. Now, HP has developed an Android tablet which actually intends to be sold at that $99 price point.
Called the HP 7 Plus, this tablet has a quad-core SoC from Allwinner Technology, based on the low-power ARM Cortex A7 architecture. This is the architecture that you often see paired with Cortex A15 cores in their "big.LITTLE" arrangement. Complementing this processor is 1GB of RAM, 8GB of internal storage, a microSD slot, 640×480 front-facing and 2MP rear-facing cameras, and about five (5) hours of battery life. It is capable of Miracast over WiFi, which is an impressive feature for its price.
The operating system is Android 4.2.2, Jelly Bean. While this is not the most recent distribution of Android, it should definitely serve users looking for an under-$100 tablet. Seriously, this space is huge and often a crap shoot in terms of reliability. If HP released a decent device, it could be a winner.
The HP 7 Plus is apparently available now, but out of stock, for $99.99. I do not know whether they already released and sold out immediately, or if it is still waiting on its first shipment.