If the work progress in accordance with the current, MTP may be in November to launch the mainnet,waiting time is very long. According to the road map, this year also need to complete znode, this year's road map do not know whether to finish on time.
It's actually not that long of an ETA and it's totally worth the wait, better buy it now while it's cheap

.
Note that MTP although reference design is 2 gb only, quoting Dmitry: The design goal of MTP is to create a PoW which would handle 4,6,8,10 GB fast enough (within a few seconds), which I think is impossible for CPU-based Equihash solvers.