The remaining Maestrale were slightly modernised in 2007-10. Agreed, unless extensively modernised they'd be very outdated. Sensors, CMS, & the missiles are pretty much past it, but given the age of the hulls & machinery I'd be surprised if they'd get more than a quick basic modernisation so they can serve as gap fillers, to provide some capability until the FREMMs start entering service.... the Maestrale are old frigates, some of them already retired and the left overs are commissioned in the Marina Militare in 1983-1985, at least 36 years old. I hope the modernisation/refurbishment will be properly done, with the old Aspide, Teseo Mk 2 and other obsolete stuff removed and replaced by decent equipment.
Besides that, it is a CODOG-class, equipped with General Electric LM2500 gasturbines.
Decommission, overhaul + heavy modernisation, trials and training will take at least two years. Maybe the process can be shortened and becoming cheaper by not modernizing the ships, but than TNI-AL will get a pair of complete obsolete almost 40 years old FFBNW frigates.