Nothing much, bar that I've heard this buzz too. Two reasons I've heard to back it up: Firstly, it would free-up a number of IPTs and secondly, I've heard about apparent structural faults across the batch.
However, as always, these just seem to be the 'latest buzzes' - what next?!
Since we are working to the S of S for Defence's "here and now" principle, there's no point in looking at FIPT's Website. CUMBERLAND's refit is still on the 07/08 programme (UNCLAS), for what that's worth.
For what it's worth, I've had a look at FIPT's BUSINESS SYSTEM OVERVIEW (UNCLAS). Straight copy and paste; page 19, "Review of Maintenance and Sparing - All T23 frigates are operating RCM derived maintenance packages delivered by UMMS. All T22s will receive the UMMS application within 12 months".
Blatant Thread drift but interesting; page 19 "Project B***n - As part of the Future Surface Combatant (FSC) studies we have conducted a study into the manufacture of new Type 23s, with a minimum of changes, to meet the FSC requirement set. Not only was this shown to be readily achievable, such an option is both affordable and supportable, while meeting the needs of the Maritime Industrial Strategy (MIS). A Type 23 derivative is now a leading candidate for FSC".
I've seen the project in question. It was supported by "free" technical input from Big And Expensive Ships. It's a good thing it was free as to have paid for what was produced would be to invite being carted off to the nuthouse. In fairness to BAe however, they weren't responsible for the combat system or costings thereof. It was sold as a "non-developmental" re-tread of the T23. Only flies in ointment being entirely new weapons systems (many originally designed for non-naval use) and a complete redesign of the propulsion system. Oh and additional accommodation..........
Utter, utter, utter b0llocks, but because it theoretically gets a certain senior officer out of a funding hole it was given the "I like THIS answer, don't give me any other answers" treatment, until the grown-ups got hold of it....