Update Roadmap Milestones doc

[Kissaki]

Conclude finished v1.11, add missing v1.12, update vNext reference to current v2.0 name.

• I have signed the Contributor License Agreement.
• I have updated the Release Notes.
• This pull request is related to an issue.

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Microsoft Reviewers: Open in CodeFlow

[Kissaki]

why not?

[JohnMcPMS]

@denelon , are you still using this file and it should be updated? Or have we moved on to other GH tracking methods?

[denelon]

I have adjusted how we use milestones. I do put work items in there to help folks track what got delivered, so I'm OK with this PR in general (1.12 was released and we're almost done with 1.28) so if those get updated, I'm OK with merging this.

[denelon]

@Kissaki if you want to update the PR to the current state, I'm fine with that.

[Kissaki]

I rebased onto the current master without conflicts.

[Kissaki]

By update, did you mean the roadmap content? Or to rebase the branch onto current master?

[denelon]

The content please :)

1.12 is GA
1.28 is in progress - Our plan assuming all goes will is for that to GA on the last Tuesday this month.

1.29 is also just getting started since 1.28 is having an RC (Release Candidate build cut to be flighted).