It must be rumour because a majority of miners have to agree to any changes to the software. There is a plan to blacklist the hackers address and make the DAO a withdraw only contract in about 27 days. However, the majority of miners must agree to upgrade to new software that blacklists the hackers address first, and they might not agree to it as it sets a bad precedent.
A voting is going on in several pools. majority of the miners who vote support the soft fork. But it is early days.
http://ethpool.org/stats/votes