Several users have reported their admin dashboard told them a new version was available but when they open the update manager, they get :

You are running the latest version 16.1.0

(while 16.2.0 is actually available)

As I wrote in [Forum, post 194006 by plg in topic 34669] Piwigo 16.2.0 : customize Standard Pages :

plg wrote:

I've found a situation where this can happen. You may have been blocked from receiving the correct list of available versions of Piwigo from piwigo.org. This was designed on purpose for some Piwigo asking for a new version thousands of times. I suppose this is not your situation but you may have just exceeded the maximum number of allowed requests. The block lasts 24 hours.

But Norbert tells me it's not the problem because he didn't check for new versions for days. Actually, there is a background check that happens every 24 jours. So even without explicit check, the installation can become blocked by piwigo.org.

For me to be able to check that in our log files, I need the "origin_hash". So please, in your file admin/intro.php, before line 47 :

if (isset($page['nb_pending_comments']))

insert:

$page['messages'][] = 'origin_hash='.sha1($conf['secret_key'].get_absolute_root_url());

then open the admin dashboard and give me your origin_hash. I'll check if it's blocked.