D7: Newsletter type project.The articles are grouped in a set (newsletter) published on a regular basis My project is as follows:

News will be published like printed news letters meaning that no ongoing updating&amp;publishing but clear intervals (in other words the articles need to be grouped together on the criteria of issue..issue January, issue February etc... At the moment plan is that publishing interval would be a few months. 

What modules and approach would you choose for this? I know prosepoint can do this...but is no longer free and I need to make it in Drupal.

I need to dismiss the confusion with simplenews module. The newsletter doesn't need to be delivered by email (tough this would be one functionality) but displayed on the website.

Regards
IMHO if your newsletter isn't meant to be emailed, the easier solution is using views with a filter on the date of nodes + a module that gives you the pdf display, like Views_PDF.

Then if you want to send your issues by mail, you may extend with Views pdf mime mail to attach the exact pdf to your mails, but it's still under development and I'm not sure if it works.
Please consider than whenever you talk about email newsletters, probably the most complete solution is still Simplenews and its submodules. If I were you, I would use Simplenews Scheduler + Insert view, like I did in a similar situation [D6].

Hope it helps