How can I upgrade '08 Pages 3.0.3 on my 2007 20" iMAC with 10.9.3
You can't. iWork 08 applications (Pages, Numbers, Keynote) require Rosetta to work properly. They will install to Mavericks but not open nor can they be upgraded. You will need to purchase the new versions. Pages is now at version 5.2 (1860).
At least my Pages from iWork '09 still works, but it and the later Pages 5.x versions still seem to be a bit of a work-in-progress to me. May be because I don't have a complete understanding of them.
You can't. iWork 08 applications (Pages, Numbers, Keynote) require Rosetta to work properly. They will install to Mavericks but not open nor can they be upgraded. You will need to purchase the new versions. Pages is now at version 5.2 (1860).
Simply not true, and I don't know where you are getting all this from.
… several nice features were removed…
… Apple has promised to restore them. We shall see.
Like I said above, they'll install but do not open. And again, an attempt was made several times, and it should be noted it's not just me that couldn't get them to work. But if you got them to work, great, we'll chalk one up for you.