Native Instruments has announced, via its forums, that it is adding plugin hosting to Maschine in version 1.6:
The upcoming 1.6 version will allow you to use VST and AU plugins as sound sources and effects in your Maschine project. This includes both the whole NI range of instruments and effects as well as any third-party plugin.
Check the screenshot for an idea of how this will look like. Instrument plugins can be used in any sound channel, and effect plugins can be inserted on both the sound and group channels as well as on the master.
Obviously the addition of plugin hosting requires quite a bit of development and testing. Regarding the timing of the release - version 1.6 is about to go into internal beta testing this month, and we are currently planning to make it available to you through a public beta test in January, with the final release probably coming up around two months later. As always, these are projected dates that can still change a bit.
Plugin hosting is the most prominent feature addition in 1.6, but there will be quite some more useful things being added with that update. Look forward to the coming weeks when we will post more details about Maschine 1.6!