Here are some modern contributions to the Gothic language:
Verein der Gotischen Sprache
Kevin Berens has founed an organization for the Gothic language in German, the Verein der Gotischen Sprache. It's an organization which anyone can join with an interest in the Gothic language.
Gothic for Goths
Another initiative for the Gothic language was Gothic for Goths, a series at YouTube in which some basic Gothic is taught, with some special phrases for people which belong to the Gothic subculture.
Communist manifesto in Gothic
Fredrik Adevag has translated the first chapter of the communist manifesto in Gothic, a small part of it is included in this magazine.