I would expect so. It always appeared that ESSM and SM6 was in the mix noting the white paper but the confirmation that SM2 Block IIIA is something else. It suggests the future frigate (FFG .... or next iteration DDG if you like) will be able to carry out extended range engagements based on its own systems using this missile.
12 ships capable of area defence would be quite a boost.
On to daydreaming ..... a batch of OPV sized ships focused on ASW with a basic anti air self defence capability would be a nice little addition to this as well.
Again, if the Janes report is accurate, it will be pretty impressive that the RAN will end up with 12 large ships capable of area defence (SM-2 and/or SM-6).
Sort of makes the missing out on the 4th AWD not so much of an issue.
One thing I do find a bit 'odd' in the Janes report is that it is talking about SM-2 Block IIIA for the Future Frigates, from what I understand and have read, the stock of Block IIIA's are being upgraded to Block IIIB standard (see link below):
Where to now for naval missiles?
Apart from the reported purchase of additional new Block IIIB's, the stock of IIIA's are reported as being upgraded to IIIB standard.
Obviously there will still be a requirement for IIIA's until the last of the FFG's retire, but with 'first' of the Future Frigates not entering service until late 2020 or early 2030, you would reasonably expect that all the IIIA's will be gone or converted to IIIB's, maybe we will even be 'beyond' that.
Not trying to 'nit pick', but there has been some question marks over Janes reporting at times, wait and see!!!
As to daydreaming, yeah well .......
If I was day dreaming, along the lines you were, I'd go more for a Corvette size ship for that role, something like the larger Damen 'Sigma' 105m Corvette/Frigate designs.
Here's a link to the Indonesian version:
Frigate ship with anti-air, anti-surface, anti-submarine capabilities
And here's a link to the Moroccan version:
105 m Sigma Frigate with reduced radar cross section
Anyway, fun to day dream on a nice sunny Sydney Sunday afternoon!!!
PS, But not going to hold my breath either!