Apparently there is a launch planned in the Muzium Setem Melaka (Melaka Stamp Museum). So far no news of any special postmark.
The launch is planned on 30 April 2015 at 10:00 am.
In this case the Jalan Laksamana cancellation is the nearest to the museum.
If anyone is interested in pre-ordering, I will drop by the museum if there is sufficient quantity to justify the cost. The cancellation that I plan will be Jalan Laksamana and anything from the museum (only if available). If the launch is cancelled, the order will not be processed.
Updated 23 April 2015:
There is a planned cachet at the museum!
Updated 24 April 2015:
Here is the image of the FDC with Kuala Lumpur cancellation.