The Software Development templates are not officially listed as being supported on 4.1, but they do work. Download version 0.3 of the templates from https://plugins.atlassian.com/plugin/details/20489?versionId=32391 and install via Confluence Admin -> Plugins -> Install -> Upload File. The templates can then be imported via Confluence Admin -> Configuration -> Import Templates.
I don't think there is a version of Plugin Information available for 4.1, but looking at the details of https://plugins.atlassian.com/plugin/details/179?versionId=297 the information that this plugin provided is largely provided by the Univeral Plugin Manager (Confluence Admin -> Plugins) which is built in to Confluence.
Hope that helps,
BTW I would love to know what templates we could improve/add to make these plugins a better solution for our customers. If you have any thoughts please let me know!
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