I couldn't find any articles about rollbot 2.0, but based on previous pre-sales and public sales, the initial price is $500 and $1,000, respectively. Furthermore, Rollbot is available for purchase at a floor price of $1.6k on both OpenSea[1] and Rollbits' own NFT Marketplace[2]. This means that if there is another sale, the Rollbot's price will most likely fall into those ranges.
[1] https://opensea.io/collection/rollbots?search
[2] https://rollbit.com/nft/marketplace
● Date: October 14th, 2021,
● Time: TBC,
● Price: $500 (from your Rollbit balance, deposit BTC, ETH or LTC),
● Minting: 2,000 Rollbots in a provably fair manner, maximum of 3 per person
Rollbot Public Sale
● Date: TBC,
● Time: TBC,
● Price: $1,000 (from your Rollbit balance, deposit BTC, ETH or LTC),
Link to whitepaper