On Friday, January 26, 2018, Jim Ryan &lt;<a href="mailto:jim@room118solutions.com">jim@room118solutions.com</a>&gt; wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hey Bruce,<div><br></div><div>Thanks for working on this, but wouldn&#39;t pg_upgrade be needed from 10.1 to 10.2?  Aren&#39;t those considered major versions, or am I misunderstanding?</div><div><br></div><div>The source of my (and potentially others) confusion is if from 9.1 to 9.2 is considered a major version change or not.  I think most users would assume from 9.x to 10.x is a major version change.  The ambiguity is in 9.x to 9.y.  </div><div><br></div></div></blockquote><div><br></div><div>Which is why we changed ;)</div><div><br></div><div>Starting with 10 the one and only value after the decimal is a minor version bug fix release.  The next major version will be 11.</div><div><br></div><div>Of versions beginning with 9 there were 7 major versions - 9.0 to 9.6; the third position value denoted the minor bug fix release.</div><div><br></div><div>pg-upgrade is only required for upgrading between major versions.</div><div><br></div><div>On our homeoage we list every major release that is currently supported.</div><div><br></div><div>David J.</div>