Add 3.12-3.14 performance improvements

episodes/optimisation-use-latest.md

@@ -23,18 +23,13 @@ exercises: 0
 ## Introduction
 
 <!-- Why it's important to use the most recent Python and packages viable -->
-It's important to use the latest Python wherever feasible. In addition to new features and fixes, much work has been completed over the lifetime of Python 3 to improve the performance of the language.
-
-> [Python 3.11](https://docs.python.org/3/whatsnew/3.11.html) is between 10-60% faster than Python 3.10. On average, we measured a 1.25x speedup on the standard benchmark suite.
+It's important to use the latest Python version wherever feasible. In addition to new features and fixes, much work has been completed over the lifetime of Python 3 to improve the performance of the language. On average, [Python 3.11](https://docs.python.org/3/whatsnew/3.11.html) was about 25% faster than Python 3.10; since then, Python 3.12 to 3.14 have each introduced additional speedups. Overall, average performance has improved [by about 50%](https://www.youtube.com/watch?v=NE-Oq8I3X_w&t=2m22s) in those four years.
 
 Future proposals, such as changes to the [JIT](https://tonybaloney.github.io/posts/python-gets-a-jit.html) and [GIL](https://peps.python.org/pep-0703/) will provide further improvements to performance.
 
-Similarly, major packages with a performance focus such as NumPy and Pandas, should be kept up to date for the same reasons.
-
-<!-- performance regressions for major packages are rare -->
-These improvements are often free, requiring minimal changes to any code (unlike the jump from Python 2 to Python 3).
+Similarly, major packages with a performance focus, such as NumPy and Pandas, should be kept up to date for the same reasons.
 
-Performance regressions within major packages should be considered rare, they often track performance alongside their test suites.
+Performance regressions in Python itself or in those packages are fairly rare, since they often track performance alongside their test suites.
 
 ::::::::::::::::::::::::::::::::::::: callout
 
@@ -47,10 +42,11 @@ For example, since October 2024, these packages stopped supporting Python 3.10;
 
 
 <!-- Not always possible due to incompatibilities -->
-However, the more packages and language features your code touches, and the older the Python it currently uses, the greater chance of incompatibilities making it difficult to upgrade.
+These improvements are often free, requiring minimal changes to any code (unlike the jump from Python 2 to Python 3).
+However, the more packages and language features your code touches, and the older the Python (or package) version it currently uses, the greater the risk of incompatibilities that require some work to upgrade.
 
 <!-- Updates may include breaking changes, important to have validation inplace to ensure results aren't affected -->
-Similar to optimising, when updating it's important to have tests in place to validate the correctness of your code before and after changes.
+As with other optimisations, when updating it's important to have tests in place to validate the correctness of your code before and after changes.
 An update to a single small dependent package could introduce a breaking change.
 This could cause your code to crash, or worse subtly change your results.