Google Nexus 7 is now (as of April 2013) available for pre-order from Google Play Store. 16 GB model has been priced at Rs. 16,000/- and the device can be ordered online from Google Play.
Nexus 7 is a light and portable 7-inch tablet (screen measured diagonally). It is powered by a powerful Quad-core (kind of 4 processors) with 2GB of RAM and 16GB of storage. (oops, no card slot).
Technical Specifications of Nexus-7
7" 1280x800 HD display (216 ppi)
Back-lit IPS display
Scratch-resistant Corning® glass
1.2MP front-facing camera
NOT GOOD FOR STILL PICTURES
WiFi, Bluetooth, NFC (Android Beam)
16 GB internal storage (actual formatted capacity will be less)
1 GB RAM
Micro USB - charging as well as USB data connection or device connection.
4325 mAH (Up to 8 hours of active use)
NVIDIA® Tegra® 3 quad-core processor
Jelly Bean, but upgradable.