The new review of the Mt Wellington Bike Strategy is open for comment until the 17th October.
See http://www.wellingtonpark.tas.gov.au/3_5.htm

One of the most interesting recommendations is for a new track from the Springs to Junction Cabin and then on to the bike park:

Recommendation 3

Undertake further feasibility investigations and assessments for:

Recommendation 5

Depending on available resources, investigations be undertaken into the need and possible community and Park user support for bike access to: