I’d say that’s quite aspirational, given there’s no funding for Piccadilly resignalling, let alone Central.
Two ways one could take that.
1) Yes it is aspirational, because that's a TfL board meeting.
2) Westinghouse Brake and Signal Co (Invensys, Siemens) and Bombardier (Alstom) signalling equipment for the 1992TS and Central Line is in short supply and becoming challenging to procure.
But, as a sub-option to this, a lot of the Central Line was and probably has now been moved to Westrace interlocking, so if this is true then it is either;
A) A misunderstanding in TfL and "Communications Based" means migrating the existing means of protection from the "14 code" track circuits to DTG-R, which is compatible with the interlocking, points, signal positioning, lights on sticks etc. or;
B) Very aspirational that they want to get even deeper into bed with Thales on the S60 equipment for a line with literally no direct interfaces (currently) to any other line. (Yes, I know about Ruislip, but it's via an signalled section of the depot).