I managed to get bwp-recaptcha working with CF7 4.1. It may not work for all scenarios, but for my contact form it worked just fine. You will need to edit some code. Hope this helps you while we wait for an update.
1. In bwp recap options, make sure the shortcode is set to recaptcha (not sure why it won’t work if the shortcode is bwp-recaptcha)
2. Edit the the file /wp-content/plugins/bwp-recaptcha/includes/class-bwp-recaptcha-cf7.php
3. Go to line number 279 and find the line
$result['reason'][$name] = $rc->options['input_error'];
change it to
$result['reason'] = array($name => $rc->options['input_error']);
4. Go to line number 295 and make the same change there
Now back in CF7 input the recaptcha shortcode as normal.
Hopefully we wil have real fix soon, but this gets me over the immediate problem.