Yes, I would think so - current rates until 30th September. Hopefully DECC learnt from the changes to FiTs they tried last time that they need to follow the due process and give reasonable warning of future changes.
I can forsee that FiTs support will shrink in line with current tariff bands; e.g. anything currently over 10p will be degressed and retained, anything currently below 10p will go.
So new tariffs would be:
< 4kW - 10p
4 - 10 kW - 8.5p
10 - 50 kW - 8.5p
> 50kW - nil
stand alone - nil
Whether this will happen from October or next April is anyone's guess, but there probably isn't quite enough time to run a consultation to meet the October deadline unless DECC announce their intentions within a few days.
The tariffs that are to apply from 1st October have to be announced before the end of this month.