Will iTunes Match replace iTunes Plus? The current iTunes Plus feature will replace selected purchased iTunes tracks with a 256-Kbps AAC DRM-free version. The soon to be released iTunes Match (for iCloud users) will store all tracks (including ripped tracks that Apple can match) in the cloud as 256-Kbps AAC DRM-free versions. Does that mean that Match replaces Plus?

Specifically, if I'm planning to sign up for Match once it launches, is there any reason do any Plus upgrades now, or should I simply wait for Match.
iTunes Match, when turned on, actually suppresses the Store link for iTunes Plus in the iTunes app on a Mac or PC.  The option to upgrade no longer appears to Match subscribers.  There is no reason to upgrade.  My personal old-school drm-sullied iTunes songs are now available to me without DRM through Match now that I've subscribed and synced my library.