[atlas] New RIPE Atlas Version 4 Probes

Dear colleagues, In part as a response to recent questions regarding the distribution of RIPE Atlas probes, we have prepared an article detailing the work we have been doing to get supply back on track: https://labs.ripe.net/Members/alun_davies/new-ripe-atlas-version-4-probes We hope that this article, in which we introduce the new generation of RIPE Atlas probes, will answer at least some of the questions that have arisen lately. We’d like to thank you all once again for your patience! Kind regards, Mirjam Kühne RIPE NCC