My perception of Telosys is for the moment limited to what I learned at Devoxx presentation and what I've tried, so if I miss things, be keen to notify.
Telosys
- Code generator
 - Based on DB
 - Performs enrichment via GUI(Eclispe plugin) in a phase called repository
 - Generates for a target framework (JEE, Ajax) developped by Telosys Team
 - Generates artefacts for entities (table)
 - Metadata of template (name, ...) are store in text file
 - Use Velocity as a template rendering engine
 
- JPA2 artefacts handle one2one relationship (not yet covered by minuteproject)
 - Telosys Plugin makes enrichment easy
 
- Targeting a specific 'Telosys Framework' solution as pros and cons
 - Pros
 - fully customized
 - all in one inside IDE
 - Cons
 - dev. burden on a team
 - no market place recognition
 - reusability of templates might be poor
 
- Code generator
 - Based on DB and WSDL based (next release: 0.7)
 - Performs enrichment via Configuration file or via a console
 - Generates for a range of market-place technologies
 - Spring/hibernate/ibatis/JPA1/JPA2
 - Openxava
 - Play
 - Grails
 - Roo
 - REST
 - Primefaces
 - FitNesse
 - ...
 - Generate for artifacts at 6 levels
 - Entity (tables/views)
 - Field
 - Package
 - Model
 - StoredProc
 - Application
 - Generated code can be updated and modifications are kept over consecutive generation
 - Metadata of template (name, 20 other attributes) are store in xml file
 - Possibility to define convention:
 - Ex: view do not have PK but it is possible to define some individually or globally by applying a convention called 'apply-default-primary-key-otherwise-first-one'.
 - Use Velocity as a template rendering engine
 
Here are couple of feasible tracks under investigation:
- Integrate Minuteproject tracks into Telosys
 - Add Telosys target as a MinuteProject 4 Telosys track
 - Add Telosys Plugin over Minuteproject generator