FWIW, I notice the plain "tmd" file (with no .NNN) can take a while to be updated on the CDN servers, even if the newer "tmd.NNN" is available via the CDN.
I've updated nuspy to optionally fetch the xml version info from tagaya and stash it in a local sqlite DB.
This lets you do things like list when each version was released:
(I'm using the http "Last-Modified" headers to get the datetime, it looks like the CDN was rebuilt last year.)
sqlite3 tagaya.db "SELECT DISTINCT(title_version), DATETIME(last_modified, 'unixepoch') FROM region_title_info INNER JOIN region_list_info USING (list_version) WHERE title_id = '0005000E10176A00';"
48|2015-09-08 21:54:34
64|2015-09-08 21:54:35
80|2015-09-08 21:54:37
96|2015-09-08 21:54:38
112|2015-10-21 01:00:01
128|2015-11-13 01:00:02
144|2015-12-18 01:00:04
160|2016-01-20 01:00:03
176|2016-03-09 01:00:07
192|2016-04-13 01:11:30