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I'm planning on building an add-in using ArcPy, but some of the functionality I need is only available in 10.1. I want to distribute this add-in and was wondering if making it 10.1 only would limit adoption. So would like to know what percentage of ArcGIS users are using version 10.1 already?

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I would doubt if there's an official statistic available...Normally enterprise customers, or customers with multiple interfaces linked to/from GIS would be the slowest to adopt the new versions, as it means a major work to get things upgraded. Standalone installations would be the quickest to adopt any new upgrade/service pack. – ujjwalesri Jan 18 '13 at 3:36
Is there no workaround for your requirement in v10? Would it be possible for you share what you're trying to achieve? I would suggest build it for latest version first...and it would be the version people would start moving to. – ujjwalesri Jan 18 '13 at 3:37
Thanks for the feedback guys. If you were to shoot from the hip, what would you say the adoption rate was? – ChrisInCambo Jan 18 '13 at 6:50
I agree with @ujjwalesri that the larger sites are the slowest to upgrade. I know of at least 2 large oil corporations still on 9.3.1. With that in mind, have you identified your target market for your add-in? Does that market consist more of large enterprises, or small single installations? – Kirk Kuykendall Jan 21 '13 at 23:13
up vote 0 down vote accepted

No one else seems prepared to take a stab at this one so I'll "upgrade" my Comment to be an Answer.

It's really hard to say but I think it would be in the range of 50-70% for Desktop (Server would be lower than Desktop because its installation is recommended first).

I target 10.1 for anything I am doing, and if it also applies to 10.0 (which it almost always does) then I consider it a bonus.

One way to derive some semi useful stats may be to use the Stack Exchange API (like Bill Dollins did for a different purpose) to graph the change in ratio of arcgis-10.1 to arcgis-10.0 tags over time. More questions should roughly indicate more use.

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I'm not sure about your last paragraph above. I'd say that Stack Exchange is used more by developers than actual users. There's a huge time lag before "the great unwashed" actually start using this stuff – Stephen Lead Jan 21 '13 at 23:17
Would be interesting to know user:developer ratio on Stack Exchange GIS but I think it may be surprisingly high. – PolyGeo Jan 21 '13 at 23:39

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