According to the MalayMail dated on 31st July 2018, Anthony Loke clarified that the MRT3 is postponed, not cancelled (link).

That's why MMC-Gamuda is submitting a fresh proposal for it with reduced costs. Not much info at this stage as it is P&C between them and the gov't. Hopefully there will be no station gutting and downsizing the train car sets. Really disappointed with the way how this gov't handled the 'cost-reduction' for MRT2 and the LRT3, though.

MRT2: Gutting Bdr Malaysia North and South only to reinstate them later? Then what's the point of removing them in the first place?
LRT3: Gutting 2 stations and downsizing the train car sets from 6 to 3 coaches. I mean please, have any of these ministers ever ride in a 2-coach train before? It's really squashy during peak hours. I'll be okay if the train car sets are reduced to 5, but 3? Jeez...

That AGL/SPL line train had 5-coach train sets, but I have not heard any complaints from either PH or BN about the 'high' costs, and no one kicked up a fuss about the train's length. In fact, I'd be happy if the current KJL line can get some 5-coach train car sets in due to the high congestion during peak hours.