Being King of the Hill means that everybody is always trying to knock you off and the latest to challenge the Nexus 7, one of the most popular 7-inch tablets is Lenovo with its A1000, a 7-inch tablet that it originally introduced at the Mobile World Congress in Barcelona.

In many ways this has been a very slow rollout and in others a very swift one. The company quietly made the tablet available for sale this week, without the fanfare that often accompanies a major release, particularly one that is going up against well established rivals.

On the other hand it was first shown almost a half year ago, many of its details were released as it went through the FCC approval process a few months back and preorders began a month ago, so any observer knew that the day when it would be available was rapidly closing in.

The A1000, which starts at $151 from the Lenovo web site is powered by a MTK 8317 dual core Coretex-A9 processor and runs the 4.2 Android operating system. It has a 7-inch display that has 1024 x 600 resolution and includes 1GB of RAM, a 16GB hard drive and supports an additional 32GB microSD storage card.

The company touts its multimedia features and notes that it is optimized for music with dual stereo speakers, Dolby Digital Plus audio enhancement among its features. The company said that the tablets will be available within the week.

It seems that the Android developers all have Google’s Nexus 7 as the target of choice. HP’s Slate 7 is also touted as a strong rival; with most articles talking about HP’s offering all mention Google. Still it is better to be at the top fighting off competition rather than trying to fight your way there. It will be interesting to see what levels Google tries to being its next generation offering.