2.6.0 can be on hold for a few more months
only themes to be adapted for 2.5.6, and 2.6.0 Alpha 1 to came out when there is a decision about languages....
just rename the version 2.6.0 alpha 0, not alpha 1, or Preview Release....

Just removed 3 languages from XOOPS, when you apply for a language, look if there is no existing already!

Why someone will apply for Polish - since there is already half done translation, or double Spanish and Portuguese ?

Polish creation team was denied
Spanish was removed
Portuguese was removed

Use instead
Polish (Poland)
Spanish (Spanish)
Portuguese (Brazil)

Portuguese (Portugal) is not created yet