Seeing same behvaiour for Splunk 6.0.1.
Edit: To get the old Time Picker and other widgets, convert your dashboard to Advanced XML (if it isn't already) and set its objectMode to viewconf . I'm not very familiar with what objectMode does, except control how the dashboard is rendered, so please check that it still works as intended. Here's a question about it: http://answers.splunk.com/answers/28600/what-does-objectmode-mean-for-a-view
Basically, I had this in my app's times.conf :
[mymenu]
is_sub_menu = True
[mymenu_today]
label = Today (from 8:00)
earliest_time = @d+8h
latest_time = now
order = 10
sub_menu = mymenu
and it just ends up under "Relative" in the time picker.
You can get the old time picker, though. I have the app Deployment Monitor v5.0.3 (http://apps.splunk.com/app/1294/) installed, and it seems to use the old flash charts and interface components. The same is true for Splunk On Splunk 3.1.0. They both display my custom time ranges in the correct sub menu.
So, I suggest you duplicate how their dashboards are built if you want to ensure you can use your time ranges.
Interestingly, sub_menu is still used by the default times.conf :
#line 51:
[other]
label = Other
is_sub_menu = True
order = 200
[today]
label = Today
earliest_time = @d
latest_time = now
order = 100
sub_menu = Other
... View more