CORE-4867: faq update (#1113) (#1114)

data/faq.yml

@@ -520,6 +520,11 @@ sections:
           We will ask you for your circumstances during the registration process and we might
           contact you afterwards to clarify any points and assess your eligibility for a free licence.
           If your circumstances change, please let us know.
+      - slug: rate-limits
+        question: |
+          Rate limits
+        answer: |
+          CORE API is free and does not require registration, subject to our [rate limits](https://api.core.ac.uk/docs/v3#section/Rate-limits). However, organisations that register get a faster rate that is typically not free. For [Supporting and Sustaining Members](/membership), the faster rate comes as a free member benefit.
       - slug: can-I-use-the-CORE-dataset-for-commercial-purposes
         question: |
           Can I use the CORE dataset for commercial purposes?

data/services/dataset.yml

@@ -64,7 +64,7 @@ main:
         [Documentation and access to previous datasets](~documentation/dataset).
     - title: How often is the CORE dataset updated?
       content: |
-        We aim to generate a new public dataset at least once a year. If you need a more recent dataset, please get in touch with us as we might be able to arrange it.
+        Older dumps of the CORE Dataset are free and ODC-By licensed. Organisations that register for the CORE Dataset can purchase a licence for the more recent datasets. Sustaining Members receive access to the most recent datasets as a free member benefit.
   note: If you use CORE in your work, we kindly request you to cite one of our publications.
   action:
     title: cite publication