well since it's 10 years later from the first All Stars, I would say that's an indication. And, people have been talking about All Stars 2 for so long.
Kind of...AG (the producer of BB) has said a BB All Stars 2 is coming soon ,Also the last All Stars happened on the 7th season,and this is the 17th. Honestly we wont get allot of information about the next season,until its actually here.