It is actually called Ubuntu Certified Professional .
The initial Ubuntu Certification was Announced in 2006 jointly with Linux Professional Institute (LPI) for Ubuntu certification exam ,but later as Officially announced here in 2010
"We are really excited to support the Ubuntu 10.04 LTS release with a
fresh course and certification programme," said Billy Cina, Director
of Training at Canonical. "Having delivered hundreds of courses over
the last four years, we listened to the requests from training
partners and students for more Ubuntu-specific content. We have
responded and are confident that the change will benefit students
globally. This will also enable us to move from a multiple-choice- to
a 'Live labs'-type exam which is entirely web-based, testing students'
ability and Ubuntu skills far more effectively."...
...The Ubuntu Certified Professional course is designed for system administrators
required to deploy Ubuntu into an office environment, a trend that is
expected to accelerate with the release of Ubuntu 10.04 LTS. Students
are not required to have any previous Linux experience but IT/system
administration experience is a must. The course lasts for five days in
a classroom or self-paced via e-learning. The exams will last 60-90
minutes and be delivered at Ubuntu Training Partner facilities or
anywhere with a secure broadband connection ...
But the links are dead on this page
and also noted by h-online here says
Canonical has announced that it will offer its own certification
programme for Ubuntu 10.04 LTS and that graduates will be entitled to
claim an 'Ubuntu Certified Professional' certification....
The joint programme with the LPI had been very successful, but there
was great demand for a pure Ubuntu certification. Now that the new
Long Term Support version is nearing completion and release, Canonical
has decided to start its own certification programme and offers an
online pre-training assessment to determine if the programme is
suitable for the prospective candidate.
The test can be taken here provided you have an Launchpad account
Pre-training assessment: Ubuntu Professional
According to this ,a bug was filed for missing Certification page , but the Training Exam page missing bug page doesn't exist any more .
The syllabus or contents covered in the course can be briefly seen here
Current Scenario - No formal announcement regarding the present Course Activity Standing has been made yet , so contacting the respective
Training Team at #ubuntu-training on irc.freenode.net at the Training wiki Home page or through
Ubuntu-training-community mailing list for Official answer would be a feasible and appropriate Idea.
EDIT: Further at Ubuntu Advantage Knowledge they mention about training
Skills training
Ubuntu Advantage offers training for systems administrators and end
users training so you can get the most out of your Ubuntu desktops and
servers. It also provides online training courses so you can boost
in-house skills quickly and easily.
All training courses included with Ubuntu Advantage are structured in
modules, allowing you to take different modules when it suits you, and
revisit the course to complete any remaining modules when you have
more time.
And at Ubuntu Advantage
Knowledge: access to exclusive technical articles from Canonical's
Knowledge Base and formal training
while browsing through Server Support they mention Training at the Bottom as
Training link takes you to support page .
Bottom-line they seem to offer Training courses currently through Ubuntu Advantage only as Paid Enterprise service.
P.S. : I may be wrong about the new info , if so then please feel free to edit it.